- Automatic control: built-in switch automatically adjusts to the water level, so no external float switch is required. - Versatile connection connector: multiple size connection ports for easy operation and flexible installation. - Easy maintenance: clear snap lid with gasket and removable mesh filter allow convenient cleaning and quick inspection. - Backflow prevention: built-in check valve prevents dirty water from flowing back into the bathtub and cabin. - Key advantages: reliable pump performance in boats, compact footprint for tight spaces, and straightforward setup with flexible connections. - Applications and use scenarios: 1) In a sailboat or small powerboat shower stall to efficiently drain water after use. 2) In a boat head or cabin shower to prevent backflow and keep the living area dry. 3) In compact marine installations on yachts where easy maintenance and versatile connections simplify installation.